first commit

basic-setup/components/u8g2/sys/avr/avr-libc/at90usb1286/Makefile

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+CC = avr-gcc
+OBJCPY = avr-objcopy
+SIZE = avr-size
+MCU = at90usb1286
+F_CPU = 16000000
+U8G2_SRC = ../../../../csrc
+CFLAGS = \
+	-mmcu=$(MCU) \
+	-DF_CPU=$(F_CPU)UL \
+	-Os \
+	-std=gnu99 \
+	-Werror \
+	-ffunction-sections \
+	-fdata-sections \
+	-I$(U8G2_SRC)/ \
+	-I../lib/ \
+	-DAVR_USE_HW_SPI \
+	-DSCK_DDR=DDRB \
+	-DSCK_BIT=1 \
+	-DMOSI_DDR=DDRB \
+	-DMOSI_BIT=2
+LDFLAGS = \
+	-Wl,--gc-sections \
+	-mmcu=$(MCU)
+TEENSY_LOADER = teensy_loader_cli
+
+SRC = $(shell ls $(U8G2_SRC)/*.c) $(shell ls ../lib/*.c) $(shell ls ./*.c)
+
+OBJ = $(SRC:.c=.o)
+
+main.hex: main.elf
+	$(OBJCPY) -O ihex -R .eeprom -R .fuse -R .lock -R .signature main.elf main.hex
+
+main.elf: $(OBJ)
+	$(CC) $(CFLAGS) $(LDFLAGS) $(OBJ) -o $@
+
+size: main.elf
+	$(SIZE) --mcu=$(MCU) --format=avr main.elf
+
+clean:
+	rm -f $(OBJ) main.elf main.hex
+
+# Example for Teensy 2.0++
+upload: main.hex
+	$(TEENSY_LOADER) -mmcu=$(MCU) -w -v main.hex